[U-Boot] [PATCH 2/6] rockchip: dts: rk3399-evb: Change the tx/rx delay value for transmission quality

David Wu david.wu at rock-chips.com
Thu Sep 21 14:17:47 UTC 2017


Give the mac controller the correct tx-delay and rx-delay value
for the rgmii mode transmission. If they are not matched, there
would be Ethernet packets lost, the net feature may not work.

Signed-off-by: David Wu <david.wu at rock-chips.com>
---

 arch/arm/dts/rk3399-evb.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/dts/rk3399-evb.dts b/arch/arm/dts/rk3399-evb.dts
index be0c6d9..13958b8 100644
--- a/arch/arm/dts/rk3399-evb.dts
+++ b/arch/arm/dts/rk3399-evb.dts
@@ -272,7 +272,7 @@
 	assigned-clock-parents = <&clkin_gmac>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&rgmii_pins>;
-	tx_delay = <0x10>;
-	rx_delay = <0x10>;
+	tx_delay = <0x28>;
+	rx_delay = <0x11>;
 	status = "okay";
 };
-- 
2.7.4




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